Laminated structure



A. O. DALLER LAMINATED STRUCTURE Filed Feb. 9, 1935 Jan. 17, 1939.

mmvrd 624;... 6% AOQLZL/ BY uromm's Patented Jan. 17,1939

PATENT OFFICE 2,143,844 I LAMINATED s'raucrmm Adrian 0. Daller,Dennisport, Mass., assignor to Utility Packages, Inc., New York, N. Y.,a corporation of New York Application February 9, 1935 Serial No. 5,7284 Claims. (01.154 42) This invention relates to containers and morespecifically to containers or wrappers for food.

This application is a continuation in part of my co-pending applicationSerial No. 674,029.

In general, it is an object of the invention to provide a device of thecharacter described, which will efllciently perform the purposes forwhich it is intended, which is simple and economical of construction,which can be expeditiously, conveniently and safely manipulated, andwhich can be readily manufactured and assembled.

Another object of the invention is to provide a moisture-proofcontainermade up of contiguous strips of material held together by amoistureproof adhesive.

Another object is to provide a moisture-proof container or sheetingtherefor, which has certain portions of relatively expensive printedmaterial and certain other portions of relatively inexpensive unprintedmaterial; and to provide such a device with its partsjoined by amoisture-proof adhesive.

Another object of the invention is to provide a moisture-proof containerat least in part transparent, and having at least portions thereof withwax-like surfaces. 1

Other objects of the invention will in part be obvious and will in partappear hereinafter.

The invention accordingly comprises an article of manufacture possessingthe features, properties and the relation of elements which will beexemplified in the article hereinafter described and the scope of theapplication of which will be indicated in the claims.

For a fuller understanding of the nature and objects of the inventionreference should be had to the following detailed description taken inconnection with the accompanying drawing, in which:

t Fig. l is a perspective view ofa device embodying one form of theinvention;

Fig. 2 is a plan view of a blank adapted to be lllged 1for the formationof the device shown in A Figs. 3, 5 and '7 are perspective views ofmodifications of the device shown in Fig. l; and

Figs. 4, 6 and 8 are plan views of blanks adapted respectively to beused for the formation of the devices shown in Figs. 3, 5 and 7.

In the packaging of certain foods, it is advisable to use transparentcontainers or wrappers. Cellulosic materials may be obtained in sheetswhich are transparent. It is also advantageous to have the container orwrapper moisture-proof.

Furthermore, in the interests of. compactness and neatness, it isdesirable that such information as must be supplied with the article beapplied directly to the wrapping. To print upon the known transparentcellulosic materials is unsatisfactory.

The cost of printing on any material, including those materials whichare not completely transparent, depends upon the size of thepiece ofmaterial which is being printed upon and not upon the amount of printingalone. 10

When a container or wrapper which is to be moisture-proof is made up ofvarious sections, it is necessary that the seams be moisture-proof andif an adhesive is used in binding the seams together, that adhesiveshould be moisture-proof. 15

The present invention is addressed to the problem of providing acontainer or wrapper which will avoid the above-described undesirableproperties and which shall have those listed as advantageous. 20

A bread wrapper is used herein as an example of the invention. In Fig. la loaf of bread is shown sealed in a wrapper ID. The several portions ofthe wrapper. are substantially coplanar by which term it is meant thatwhen the wrapper 25 is spread upon a flat surface, adjacent portionsoverlap each other along a seam and extend away from each other in whatis practically a single plane. Portions ll of the wrapper are ofmoisture-proof transparent cellulosic material, 30 such as for example,the material known under the trade-mark "Cellophane and mentioned in thepatent to Charch No. 1,992,190, granted February 26, 1935. Portion i2 isof a somewhat different material which is moisture-proof. It may 35 be apaper of the type known as waxed. There may be any desired arrangementof the portions other than that shown in Fig. 1. As shown, the waxedpaper portion forms a band around the center of the loaf between thetwoend portions Q H. The portion i2 is sealed to the portions II along theseams 13 by a moisture-proof adhesive. It is preferably one which may beapplied moist to a surface andwhich will remain attached to that surfaceafter the moisture has 45 been removed, but which thereafter will onlyadhere to other similar adhesive and not to another bare surface. Blankshaving this adhesive on one side only may be stacked without theirbecoming fastened to each other, or if the adhe- 5 sive on one face ofone blank is not in registry with the adhesive on the adjacent face ofthe next blank, they may be stacked without becoming Joined.

Separate strips of material It and I! may be given a coating of theadhesive alongthe edge and permitted to (1. 37. and later, by anyconvenient method, they may be pressed together to form a broader strip;.or they may be pressed together with heat while the adhesive is fluid.A portion of such a compound strip sufficient to wrap one article, isshown in Fig. 2.

An adhesive having the properties described may contain a latex or gumor tacky material such as a dispersion of rubber in a suitable carrier.Where latex is employed, other materials may, if desired, be mixed withthe latex. For example, casein may be added to improve the action or theadhesive. Ammonium hydroxide may be incorporated in the adhesive torender it sufiiciently alkaline to hold and keep the latex and casein insolution. Such a mixture may be diluted with water to the properconsistency for use. if increased tackiness is desired sodiumhypochloride in suitable quantities may be added to the mixture.Finally, a suitable deodorant such as methylsalicylate and any suitablegermicide may be added; if desired. Such a product Y forms an excellentadhesive, particularly where the sheet to which it is applied is used inconnection with the packaging of foodstuffs. It is to be understood,however, that the invention is not to be limited to the use of aparticular adhesive such as that described above. For example, purerubber latex may be employed under certain. circumstances and other gumsand/or latexes may be used. 1

Adhesive such as those described have been found adapted to adheredirectly to smooth surfaces which may even have been coated with wax,

surface beneath the wax coating. Such a process has been found tedious,expensive and laborious.

to form, as it were, a new compound adhesive.

. of the printing will be only 20% of what that The portion i2 with thewax-like surface may have certain indicia fl t associated therewith.Where these indicia are printed, the cost of printing will be reduced toan extent that if the portion i2 is 20% of the entire wrappinggthe costcost would have been, had the same printing been applied to a sheet, thedimensions of which were equal to the entire wrapper.

In Fig. 3 is shown a modification oi the wrapper messes shown in Fig. 1.The wrapper in Fig. eomprises end portions i2, having a wax-like surfaceand an intermediate portion ii of transparent 'moisture-proof cellulosicmaterial.

In Fig. 5 there is illustrated a modification wherein all portions ofthe wrapper are composed of material having a wax-like surface, andpreferably waxed paper. Only one of the portions (portion i2) hasprinting thereon. Portions i2 are without printing and are positionedatthe ends of the leaf.

Fig. Tshows an article of manufacture somewhat similar to that shown inFig. 5, with the exception that the portion iZ-waxed paper-is notprinted, and the portions l2'-waxed paperat the ends have printingthereon.

Since certain changes may be made in the above. article and difierentembodiments of the invention could be made without departing from thescope thereof, it is intended that all matter contained in the abovedescription or shown in the accompanying drawing shall be interpreted asillustrative and not in a limiting sense.

It is also to be understood that the following claims are intended tocover all of the generic and specific features of the invention hereindescribed, and all statements of the scope of the invention which, as amatter of language, might be said to. fall therebetween. g

Having described my invention, what I claim as new and desire to secureby Letters Patent, is:

1. A laminated structure c'omprising a strip of paper coated with awax-like film, a flexible strip of transparent cellulosic materialhaving a moistore-proof coating, said strips being overlapped andsecured together by a line of moisture resistant adhesive comprising.rubber derived from latex, said adhesive forming a bond between said Iwax-like film and said moisture-proof coating.

2. A laminated structure comprising a strip of paper having a wax-likefilm on the surface thereof and a strip oi transparent cellulosicmaterial having moisture-proof coating, contiguous edges of said stripsbeing in overlapped relation; a moisture resistant seam along theoverlapped areas comprising a line of adhesive containing.

rubber derived from latex commingled with a part of said wax-like filmand forming a bond between the wax-like film and said moisture-proofcoating. I

3. A sheet of material comprising a plurality of strips of fCellophanehaving a coating of moisture-proof composition and having adjacentoverlapping margins, said overlapping margins being sealed together witha tacky, gum-like, moisture resistant adhesive along a moisture-proofseam, said adhesive consisting essentially of rubber derived from latex.

4. A laminated structure comprising a strip of paper coated with awax-like film, a flexible strip of transparent cellulosic materialhaving 9. moisture-proof coating, said strips being overlapped andsecured together by a line of moisture re sistant adhesive comprisingrubber derived from latex, said adhesive forming a bond between saidwax-like film and said moisture-proof coating.

ADRIAN O. DALLER.

